Boy shorts or briefs? Made for those who like a say in the matter, the women’s Patagonia Trail Chaser running shorts are liner-free, so what you wear underneath is entirely up to you. For our part, we use 100% ultra-lightweight polyester fabric that’s breathable, water-resistant and specially designed not to cling. Air Flow mesh side panels keep heat flowing in the right direction; three pockets – one center back and two more on the sides -- are generously sized to carry calories of your choice. Slightly notched sides and a moderate 5” inseam let you move freely and reflective logos on front and back keep you visible. With moisture-wicking performance and a Deluge DWR (durable water repellent) finish.

There is a size chart on the product page, look for a link to the right of the size options. It says size small will fit 26-27" waist and 36.5-37.5" hips; size medium will fit 28-29" waist and 38.5-39.5" hips.